Another reference to Greek mythology, Sisyphus was a king doomed to complete an impossible task for all eternity in the afterlife. Sly and crafty, Sisyphus earned the wrath of Zeus who ordered Thanatos (Death) to bind him in Tartarus, the realm beneath the Underworld. Sisyphus tricks Thanatos and binds Death himself, a move that wreaks havoc in the world of the living. For his misdeed, Sisyphus is condemned to roll a boulder up a mountain for eternity as the boulder always rolls back down before he can reach the top.